I purchased this approximately two years ago. There are minor scratches on the case and a general feeling of use, but the operation has been confirmed and it can be used comfortably without any problems. It has been lightly cleaned. The main unit, box, and other items that came with the purchase are included. Wireless Noise Canceling Stereo Headset LinkBuds S WF-LS900N (B) Black Brand: SONY Wearing style: Separate left and right, completely independent Earphone/Headphone type: Canal type Structure: Sealed type Color: Black Wireless/Wired connection: Wireless Earphone/Headphone functions: Noise canceling, Hi-Res, Microphone, External sound capture, Sound quality adjustment, Waterproof, Splashproof, Remote control Low-frequency range (Hz): 20.0 Hz High-frequency range (kHz): 40.0 kHz Wireless standard: Bluetooth Bluetooth codecs: LDAC, AAC, SBC IP standard (waterproof standard): IPX4 Drive method: Dynamic type Driver size (mm): 5.0 mm Charging port: USB Type-C Weight (g): 9.6 g